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140 lines
3.5 KiB
140 lines
3.5 KiB
4 years ago
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'use strict';
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exports.type = 'perItem';
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exports.active = false;
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exports.description = 'rounds list of values to the fixed precision';
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exports.params = {
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floatPrecision: 3,
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leadingZero: true,
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defaultPx: true,
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convertToPx: true
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};
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var regNumericValues = /^([\-+]?\d*\.?\d+([eE][\-+]?\d+)?)(px|pt|pc|mm|cm|m|in|ft|em|ex|%)?$/,
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regSeparator = /\s+,?\s*|,\s*/,
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removeLeadingZero = require('../lib/svgo/tools').removeLeadingZero,
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absoluteLengths = { // relative to px
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cm: 96/2.54,
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mm: 96/25.4,
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in: 96,
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pt: 4/3,
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pc: 16
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};
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/**
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* Round list of values to the fixed precision.
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*
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* @example
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* <svg viewBox="0 0 200.28423 200.28423" enable-background="new 0 0 200.28423 200.28423">
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* ⬇
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* <svg viewBox="0 0 200.284 200.284" enable-background="new 0 0 200.284 200.284">
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*
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*
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* <polygon points="208.250977 77.1308594 223.069336 ... "/>
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* ⬇
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* <polygon points="208.251 77.131 223.069 ... "/>
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*
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*
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* @param {Object} item current iteration item
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* @param {Object} params plugin params
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* @return {Boolean} if false, item will be filtered out
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*
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* @author kiyopikko
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*/
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exports.fn = function(item, params) {
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if ( item.hasAttr('points') ) {
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roundValues(item.attrs.points);
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}
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if ( item.hasAttr('enable-background') ) {
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roundValues(item.attrs['enable-background']);
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}
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if ( item.hasAttr('viewBox') ) {
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roundValues(item.attrs.viewBox);
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}
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if ( item.hasAttr('stroke-dasharray') ) {
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roundValues(item.attrs['stroke-dasharray']);
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}
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if ( item.hasAttr('dx') ) {
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roundValues(item.attrs.dx);
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}
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if ( item.hasAttr('dy') ) {
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roundValues(item.attrs.dy);
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}
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if ( item.hasAttr('x') ) {
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roundValues(item.attrs.x);
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}
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if ( item.hasAttr('y') ) {
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roundValues(item.attrs.y);
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}
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function roundValues($prop){
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var num, units,
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match,
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matchNew,
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lists = $prop.value,
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listsArr = lists.split(regSeparator),
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roundedListArr = [],
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roundedList;
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listsArr.forEach(function(elem){
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match = elem.match(regNumericValues);
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matchNew = elem.match(/new/);
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// if attribute value matches regNumericValues
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if (match) {
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// round it to the fixed precision
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num = +(+match[1]).toFixed(params.floatPrecision),
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units = match[3] || '';
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// convert absolute values to pixels
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if (params.convertToPx && units && (units in absoluteLengths)) {
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var pxNum = +(absoluteLengths[units] * match[1]).toFixed(params.floatPrecision);
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if (String(pxNum).length < match[0].length)
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num = pxNum,
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units = 'px';
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}
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// and remove leading zero
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if (params.leadingZero) {
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num = removeLeadingZero(num);
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}
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// remove default 'px' units
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if (params.defaultPx && units === 'px') {
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units = '';
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}
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roundedListArr.push(num+units);
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}
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// if attribute value is "new"(only enable-background).
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else if (matchNew) {
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roundedListArr.push('new');
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} else if (elem) {
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roundedListArr.push(elem);
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}
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});
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roundedList = roundedListArr.join(' ');
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$prop.value = roundedList;
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}
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};
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